baber/WOPTO huggingface dataset:
Patent GB-884152-A (GB)
Title: Improvements in or relating to glycidyl ethers of polyhydric phenols
IPC: C07D301/28
Filed: 1959-01-13
Abstract: Glycidyl ethers of polyhydric phenols are prepared by heating a solution of a polyhydric phenol in excess epichlorhydrin and adding a first aqueous solution of an alkali metal hydroxide while maintaining the solution under total reflux, thereafter adding a second aqueous solution of said alkali metal hydroxide while distilling vapours of water and epichlorhydrin from the reaction mixture, removing the water from the vapours and recycling the epichlorhydrin to the reaction mixture, said first and second aqueous solutions each containing half of the total quantity of alkali metal hydroxide used and together containing at least 15% by weight of said alkali metal hydroxide, but not containing substantially more than one molar equivalent of hydroxide for each phenolic hydroxy group.  Specified polyhydric phenols include novolak resins obtainable by acid catalyzed condensation of phenol, p-cresol or other phenol with aldehydes such as formaldehyde, acetaldehyde and crotonaldehyde.ALSO:Glycidyl ethers of polyhydric phenols are prepared by heating a solution of a polyhydric phenol in excess epichlorhydrin and adding a first aqueous solution of an alkali metal hydroxide while maintaining the solution under total reflux, thereafter adding a second aqueous solution of said alkali metal hydroxide while distilling vapours of water and epichlorhydrin from the reaction mixture, removing the water from the vapours and recycling the epichlorhydrin to the reaction mixture, said first and second aqueous solutions each containing half of the total quantity of alkali metal hydroxide employed and together containing at least 15% by weight of alkali metal hydroxide, but not substantially more than one molar equivalent of hydroxide for each phenolic hydroxy group.  Specified phenols are resorcinol, hydroquinone, methyl resorcinol, phloroglucinol, 1,5-dihydroxynapthalene, 4,41-dihydroxydiphenyl, bis (4-hydroxyphenyl) methane, 1,1-bis (4-hydroxyphenyl) ethane, 1,1-bis (4-hydroxyphenyl) isobutane, 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (4-hydroxylphenyl) butane, 2,2 bis (4-hydroxy-2-methylphenyl) propane, 2,2-bis (2-hydroxy-4-t-butylphenyl) propane, 2,2-bis (2-hydroxyphenyl) propane, 2, 41 - dihydroxydiphenyldimethyl methane, 2,2-bis (2-chloro-4-hydroxyphenyl) propane, 2,2-bis (2-hydroxynaphthyl) pentane, 2,2-bis (2,5-dibromo-4-hydroxyphenyl) butane, 4,41-dihydroxybenzophenone, 1,3-bis (4-hydroxyphenyloxy)-2-hydroxypropane, 3-hydroxyphenyl salicylate and 4-salicylaminophenol.
Patent GB-1536751-A (GB)
Title: Electric shaver
IPC: B26B19/04
Filed: 1976-01-14
Abstract: 1536751 Dry shavers MATSUSHITA ELECTRIC WORKS Ltd 14 Jan 1976 [27 Jan 1975] 01282/76 Heading B4B An electric dry shaver has an inner blade block 125 for co-operation with an outer semicylindrical flexible metal foil and a vibrating drive for the blade block comprising a driveshaft 105 connected to a vibrating means (not shown), and connected by a bush 118 to the blade block. The bush 118 is pivoted by a pin 122 to the block and has a slotted lower end 120 which is connected to a pin 107 in the hollow end of the drive-shaft. A spring 109 in the driveshaft engages the bush to urge the blade block 125 against the inside of the foil. The lower end of the bush 118 is a sliding fit in the shaft end to prevent rotation of the blade block about its longitudinal axis. The pivot pin 122 is arranged to intersect the axial line of the foil at the centre of gravity of the blade block.
Patent GB-295897-A (GB)
Title: Improvements in and relating to therapeutic lamps
IPC: A61N5/06
Filed: 1928-01-16
Abstract: 295,897. Croad, A. K.., (Hanovia Chemical & Manufacturing Co.). Jan. 16, 1928. Heating by electricity.-A therapeutic lamp comprises a number of resistance elements 47 formed as rods held between resilient arms 31 - - 34 and a conical member 42 mounted on the inner ends of the arms. The arms 31 &c. are bent round at the ends as shown and formed with sockets to receive the outer ends of the elements 47, the inner ends engaging with depressions 44 in the member 42. The springs 31 - - 34 are carried on an insulating plug 28 with a metallic coating screwing into a socket 26. The member 42 is furnished with a flange 41 secured to the springs 31 - - 34 by insulated bolts, a sheet of insulating material being interposed between the member 42 and the springs. Two of the springs are connected to a central bolt 25 and the other two to the coating of the plug 28. The whole is enclosed in a reflector 16, provided with a handle 18 and adapted to be mounted on a stand 10.
Patent GB-673187-A (GB)
Title: Gas purification
IPC: C10K1/12
Filed: 1950-01-19
Abstract: 673,187. Purifying gases. HAWKES, C. T., and HUMPHREYS & GLASGOW, Ltd. Dec. 19, 1950 [Jan. 19, 1950], No. 1506/50. Class 55 (ii). A process for removing hydrogen sulphide and hydrogen cyanide if present from fuel gases comprises washing the gases three or more times with an aqueous alkaline suspension of hydrated oxide of iron, or carbonate or basic carbonate of iron which after use is revivified by aeration, some only of the gas washings, but at least two, being effected with fresh or revivified suspension while the other or each of the other gas washings is effected with used suspension from a later, gas washing. As illustrated, the gas to be treated passes through scrubbers 1, 2 and 3 in series, scrubbers 2 and 3 being supplied with fresh or revivified suspension from an aerator 10 via the line 31 and the scrubber 1 with used suspension from the scrubber 3 by lines 20, 21, pump 13 and line 24. The used suspension from scrubbers 1 and 2 is returned by lines 27, 28, pump 11 and line 29 to the aerator 10. Collecting vessels 8 and 6 may be placed at intermediate points of the circulation system for the used suspension from the scrubbers 3 and scrubbers 1 and 2 respectively. In modifications four and five scrubbers are employed, two or three washings being effected by fresh or revivified suspension.
Patent GB-549783-A (GB)
Title: Improvements in method and means for supporting articles of plastic material
IPC: F26B25/18
Filed: 1942-02-05
Abstract: 549,783. Drying moulds. CASTINGS PATENT CORPORATION. Feb. 5, 1942, No. 1556. Convention date, Feb. 7, 1941. [Class 83 (i)] [Also in Group XIII] A mould 10 of plastic material such as gypsum-base material is supported during drying or otherwise curing on a stand 11 by upwardly projecting resilient members 14 which do not resist the shrinkage or expansion of the mould in any direction. The resilient members may consist of light coil springs or of flexible pins, which may be adjustably secured to the stand.
Patent GB-663215-A (GB)
Title: Improvements in or relating to heat-treatment of composite metallic structures
IPC: B22F7/00
Filed: 1949-01-20
Abstract: In a method for the treatment of a composite metal structure comprising a low melting point metal dispersed in a matrix of a high melting point metal, the structure is heated at a temperature below the melting point of the low melting metal.  A lead bronze, comprising a mixture of copper and lead, with or without tin, may be heated for 48 hours at 320 DEG C. and thereafter subjected to a treatment, e.g. sintering, at a higher temperature without the lead extruding from the pores.  The lead bronze may be sintered to a steel plate for use as a bearing.  Specification 638,382 is referred to.
Patent GB-589448-A (GB)
Title: A loom weft replenishing motion
IPC: D03D51/34
Filed: 1945-01-20
Abstract: 589,448. Loom weft-replenishing motions; weft feelers. TERRY, S. A. Jan. 20, 1945, No. 1640. [Class 142 (iii)] A loom weft-replenishing motion comprises a rotary shuttle box A having a number of cells for shuttles mounted on one end of the sley A<1>, the partial rotation of the shuttle box being governed by a feeler E which is mounted on the opposite end of the loom and moves perpendicularly to the shuttle against spring loading when it contacts the weft of the shuttle this movement being inoperative as regards the shuttle change motion, and turns through an angle, Fig. 4, when it slides along the surface of the weft carrier. This turning movement causes a catch H, Fig. 1, on an arm h to engage a projection f on the weft hammer F and be actuated thereby to lift an arm K having an inclined surface K' terminating in a step K<2> and cause a tumbler lever n which travels with the sley to rise up the inclined surface and disengage a positioning lever M from one of a number of notches l in a disc L fixed on the outer end of the rotary box thereby releasing the latter. As the sley moves further forward a pivoted hook P carried by the arm K engages one of a number of pegs l<1> in the disc L to turn the rotary box thereby moving an exhausted shuttle from, and a full shuttle into, weaving position. At or about the end of the forward movement of the sley, the tumbler lever n drops down the step K<2> and allows the lever M to engage a notch in the disc L so as to lock the rotary box. During the backward movement of the sley, the lever n rides over the step K<2> and down the inclined surface and the remaining parts return to their normal position.
Patent GB-1140821-A (GB)
Title: Dimerisation of monoalkenes
Inventor: SMITH EDGAR THOMAS
IPC: C07C2/30
Filed: 1967-01-12
Abstract: 1,140,821. Dimerizing monoalkenes. IMPERIAL CHEMICAL INDUSTRIES Ltd. 11 Jan., 1968 [12 Jan., 1967], No. 1691/67. Heading C5E. Monoalkenes are dimerized by bringing into contact at least one monoalkene with a reaction medium comprising a compound of a Group VIII metal, a ligand containing a donor atom or atoms of Group V B , a metal compound capable of acting as a Lewis acid under the conditions of the process and a compound containing an ionizable proton, e.g. water, an acid, an alcohol, a mercaptan, an amine or a phenol. The Lewis acid may be an aluminium halide or an aluminium alkyl halide. The Group VIII metal compound is preferably nickel in the form of a salt of an organic acid such as stearic or naphthenic acid or a co-ordination compound such as an acetylacetonate. Suitable ligands are listed in Specification 1,131,146, but preferred ligands are trialkyl phosphines or phosphites. The compound containing an ionizable proton is preferably added to the reaction medium, e.g. an inert solvent, after a maximum rate of dimerization has been obtained, and in amount such that the molar ratio to the Lewis acid does not exceed 1: 1. The dimerization may be carried out at -25 to 100‹ C. Examples describe the dimerization of propylene.
Patent GB-242216-A (GB)
Title: Improvements in or relating to airship stations
IPC: E04B1/346
Filed: 1925-01-20
Abstract: 242,216. Siemens - Schuckertwerke Ges. Oct. 29, 1924, [Convention date]. Shelters for housing aircraft. - Landing arrangements for airships comprise the provision of a rotating lock-hangar with radially arranged fixed hangars wholly or partially sunk into the ground. The rotary lock-hangar 1 may be arranged so that it can be lowered to the level of the fixed hangars for transference of the air ship or alternatively the fixed hangars 3 may be arranged so that they can be raised to the level of the lock-hangar or so that they may be tilted about one end 6 in order that the air ships may be transferred easily. In this case, only the part of the fixed hangar which comes above the ground level may be covered.
Patent GB-394900-A (GB)
Title: Improved process of dyeing warp threads in beamed condition
IPC: D06B5/18
Filed: 1933-01-19
Abstract: <PICT:0394900/IV/1> <PICT:0394900/IV/2> Warp threads are beamed on a hollow perforated core or sleeve 4 fitted over a solid beam 1, and the beam is then removed and replaced by a telescopic tube 8, 10, each member of which is provided with a flange 9, 11, the two flanges being tightened against each other by nuts 13, or by gravity by placing the beam vertically and weighting the upper flange.  In the latter case, the upper flange is prevented from being moved upwards by the pressure of the liquid within the beam by means of a pawl and ratchet device 14.  The perforated core or sleeve 4 is elastic in the direction of its length and conveniently is made of a coil spring provided with metal or other strip, thread, or web tressed around its successive windings as is described in Specification 289,708, [Class 120 (iii), Yarns &c.].
Patent GB-110087-A (GB)
Title: Improvements in Machines for Shredding Vegetables and for like purposes.
Inventor: CRAWHALL SURTEES NEWTON
IPC: B26D3/22
Filed: 1917-02-05
Abstract: 110,087. Crawhall, S. N., and Mathys, G. A., (trading as Hyslop & Co, A.). Feb. 5, 1917. Cutting vegetables &c.-The shredding-knives of a machine for shredding vegetables, in which vegetables are fed from a hopper against shredding-knives 10 and a slicing-knife 7 mounted close to the edges of a gap 6 in a rotating disk carrier 1, are arranged to be individually removable for replacement. The knives 10 are mounted in slots in a holding plate 8 secured to the carrier 1, the slots being formed approximately tangential to the path traced by the knives. The plate 8 is arranged to project slightly beyond the edge of the carrier 1, the slots being formed in a ridge 9 projecting upwards and outwards from the plate. Recesses are cut in the lower part of the knives to permit them to pass over the projecting portion of the plate 8 and to bear against the edge of the carrier as shown in Fig. 6. The knives are clamped in position by clamping-plates 12 provided with an inclined edge 14 bearing against a similar edge on the plate 8 so that, when the securing bolts are tightened, the knives are drawn inwards against the edge of the carrier. Other forms of recesses in the knife blades co-operating with clamping-plates are described.
Patent GB-1079821-A (GB)
Title: Process for the production of high molecular weight,soluble and termoplastic polycarbonates
Inventor: SCHNELL HERMANN
IPC: C08G64/14
Filed: 1966-01-14
Abstract: High molecular weight thermoplastic polycarbonates based on bisphenols contain also the residues of 0.01 to 2 mol per cent of an at least one trihydric or higher polyhydric phenol and 0.1 to 8 mol per cent of at least one monohydric phenol, the percentages being based on the mols of the bisphenol.  If the polycarbonates are made by the phosgene or bis-chloroformate method, monohydric phenols must be added to the reactants.  However, if the polycarbonates are made by the transesterification process using diaryl carbonates, the monohydric phenol component of the polycarbonate may be derived from the phenol liberated by the diaryl carbonate not all of which is removed from the reaction mixture.  Specified reactants are: Bisphenols-Bisphenol A and 1:1-(4:41-dihydroxydiphenyl) - cyclohexane; at least trihydricphenols-phloroglucinol, 1:3:5- tri-(4-hydroxyphenyl) benzene, 1:1:1 - tri - (4-hydroxyphenyl) - ethane, 2,2 - bis - [4:4-(4,41-dihydroxydiphenyl) - cyclohexyl] - propane, and trimeric isopropenylphenol and its hydrogenation products; monohydric phenols-phenol and its methyl, ethyl, propyl, isopropyl and butyl substitution products.
Patent GB-704494-A (GB)
Title: Improvements in and relating to the construction and manufacture of detachable re-usable hose fittings
Inventor: KAISER RUDOLPH
IPC: F16L33/24
Filed: 1952-01-23
Abstract: 704,494. Hose couplings. AEROQUIP CORPORATION. Jan. 23, 1952, No. 1912/52. Class 99 (1). In a hose end fitting comprising a sleeve 12, an insert 14 formed with an external nipple 44, and a coupling nut 16 associated with the nipple, the sleeve, insert, and nut are all formed from sheet metal. Screw-threads 26, 28 and 22, 30 are rolled in the sleeve and nipple respectively. The sleeve is first screwed on to the hose, and the tapered insert is then screwed into the hose until the threads 30 engage the threads 28 and the hose end is expanded into a recess 32. Wrench-engaging notches 36 are provided in the sleeve. Each part of the fitting is of uniform thickness.
Patent GB-596636-A (GB)
Title: Improvements connected with screw propellers
IPC: B64C11/20
Filed: 1940-01-31
Abstract: 596,636. Air-screws. COMPAGNIE GENERALE D'ELECTRICITE. Jan. 31, 1940, No. 1926. Convention date, Feb. 2, 1939. [Class 114] A moulded screw-propeller blade is constituted by inorganic and artificial filaments disposed parallel to one another and embedded in a binder, the filaments being composed of bundles or twists of fine fibres having individually a diameter of less than 10 microns and preferably of from 4 to 5 microns. The fibres may be of glass, silica or metal and the binder be a synthetic resin having a modulus of elasticity not greater than that of the filaments. The proportion by volume of the filaments is higher adjacent the hub than towards the tip and averages at least 30 per cent. The filaments may be straight and lie along the length of the blade or be disposed along the contour thereof and may be corded, twisted, plaited or' cabled or be parallel or be woven and a small portion be disposed haphazard in the blade. The reinforcement may include filaments of different kinds and their surfaces may be roughened, or coated, or lubricated.
Patent GB-898146-A (GB)
Title: Improvements in or relating to magnetic sound recording and playback apparatus
IPC: G11B25/04
Filed: 1960-01-19
Abstract: 898,146. Magnetic sound-and-picture apparatus. TOKYO DENKI KAGAKU KOGYO KABUSHIKI KAISHA and HOSHINO, Y. Jan. 19, 1960 [Jan. 21, 1959], No. 1953/60. Class 40 (2). A large record S for teaching or advertising has pictorial information on the upper face and a magnetic film 11 transducible by an apparatus R as in Specifications 794,788 and 850,291. The oversize picture is supported by an auxiliary frame 9 attached around the perimeter of the normal record supporting panel 5, the record being clamped by an oversize pressure plate 24 hinged to the frame 9. The record is located by an adjustable pin 12 and a spring- loaded pin 13 engaging apertures 16, 17 in the record, apertures 20 providing clearance for the normal locating pins 8 and an aperture 19 being aligned with a fiduciary mark 18 before play. The assembly may be mounted over a recess in a wall, Fig. 4, a loud-speaker 30 and control button 29 being mounted separately or alternatively may be mounted on a vehicle body-panel.
Patent GB-462628-A (GB)
Title: Improvements relating to coal-cutting machines
IPC: E21C35/20
Filed: 1936-01-22
Abstract: 462,628. Coal-cutting machines. ANDERSON, A., and ANDERSON, BOYES, & CO., Ltd. Jan. 22, 1936, No. 2016. [Class 68 (i)] In a coal-cutting machine having an impeller comprising blades 1 mounted on. a chain to move in an oblique path, the blades ascending as they leave the zone of accumulation of the cuttings to throw the latter upwards upon the parapet of cuttings disposed parallel to the line of cut, a structure including vanes 15 is provided, the inlet to the passages between the vanes being adjacent to the point of discharge from the impeller and the outlets being arranged to direct the cuttings to the desired position. The vanes depend from a plate 13 mounted on the impeller housing. Notches 16 may be provided at the rear of the plate and between the vanes. Specification 435,799 is referred to.
Patent GB-399061-A (GB)
Title: An improved air and water tight container for electric accumulators
IPC: H01M50/627
Filed: 1933-01-21
Abstract: 399,061. Accumulators. BRITANNIA BATTERIES, Ltd., 233, Shaftesbury Avenue, London. - (Accumulatoren-Fabrik Akt.-Ges. ; 3, Askanischer Platz, Berlin.) Jan. 21, 1933, No. 2040. Convention date, Jan. 22, 1932. [Class 53.] An accumulator in which air is drawn over the surface of the electrolyte to remove gases is provided with a check valve t which closes the air entrance when the suction fan stops and prevents gases escaping into the battery room. The valve may be actuated by the gas pressure or by electrical or mechanical means depending on the operation of the fan. In order to prevent entry of water when the accumulator is used on ships a float valve s<2> is provided which closes the opening v<1> on the entrance of water. Condensation or other water entering the exhaust pipe r escapes through a trap w provided with a float s<1>, a third float s<3> preventing water from entering the accumulator through the gas exit in case of flooding.
Patent GB-264883-A (GB)
Title: An improved tyre for motor cars or the like
IPC: B60C19/12
Filed: 1927-01-24
Abstract: 264,883. Webb, P. T. Jan. 23, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Non-metallic elastic bodies and cores; jackets and covers.-A core 2 shaped to fill an ordinary tyre cover 1, or to be fitted as a protective liner between the air-tube 3 and the cover, Figs. 1 and 2 respectively, is formed of spongy rubber or other material having air-cells. The core may be formed by superposing perforated sheets and may be reinforced by cords 5 of rubber &c.
Patent GB-711987-A (GB)
Title: Improvements in and relating to cockpit hoods of aircraft
Inventor: WILLS CHARLES FREDERICK
IPC: B64C1/32
Filed: 1952-01-25
Abstract: 711,987. Releasable cockpit canopies for aircraft. ENGLISH ELECTRIC CO., Ltd. Jan. 23, 1953 [Jan. 25, 1952], No. 2110/52. Class 4 An aircraft cockpit hood is connected to the aircraft structure by tubular bolts each loaded with a separate explosive charge, firing means being provided to detonate the charges of all the said bolts simultaneously. The canopy 1 is connected to a light metal frame 2 by bolts 3 passing through rubber sleeves 5, the frame being formed at its rear edge with pins that engage in hooked members attached to the aircraft structure and so shaped that the released canopy swings rearwardly through a predetermined angle before being carried away by the relative airflow. The frame 2 rests, through the medium of rubber cushions 7, on a coaming tube 8 forming part of the cockpit structure and is retained thereon by a number of hollow bolts 9 each containing an explosive charge. Each bolt is formed with a neck portion of reduced cross section which is fractured when the explosive charge is fired so that the canopy is released and swept away. The hinges along the rear edge of the canopy may be dispensed with and a separate door is provided in the fuselage for normal use.
Patent GB-317098-A (GB)
Title: Improvements in or relating to the manufacture of artificial filaments or threads
IPC: D01F2/30
Filed: 1928-02-06
Abstract: 317,098. Dreyfus, H. Feb. 6, 1928. Cellulose esters and ethers, processes for making filaments from.-For the manufacture of " hollow filament or fibres by the dry spinning method, there are employed solutions of organic derivatives of cellulose, particularly cellulose acetate, in volatile solvent mixtures containing both high and low boiling point, constituents, the boiling points differing by 35‹ C. or more, and spinning temperatures at or about the boiling point of the higher boiling point constituent, the temperature depending to some, extent on the relative proportions and boiling points of the constituents of the solvent mixture. Operating in this manner, the filaments can be distended without loss of strength, and they may also be drawn out to fine deniers. It is preferred that the boiling point difference should be 40‹ C., 50‹ C., 100‹ C. or even higher; if, however, the difference is between 35‹ and 40‹ C., then the lower boiling point constituent should comprise at least 50 per cent, preferably 75 per cent, of the solvent mixture. In examples, hollow filaments are obtained by spinning solutions of cellulose acetate in acetone-acetaldehyde at. 65‹ C., in acetoneacetaldehyde-alcohol at 70‹ C., in alcohol-methyl formate at 63‹ C. and 80‹ C., methyl formatecyclobutanone at 85‹ C., and in acetone-water at just below 100‹ C. The spinning solution may contain a high-boiling point solvent or plasticizer, and any plasticizer that remains in the filaments may be removed by extraction with alkaline solutions &c. Specifications 165,519, 182,166, 198,023, 203,092, 209,125, 210,108, and 317,097 are referred to.